Here at Code Review, we, the reviewers volunteering our time, are deciding to use our time to focus on improving something we found on this site. Because of this, questions must be interesting. It is easy to ask interesting questions if you are 'medium/intermediate'. If I am just learning the basic syntax and concepts of a new programming language, how can I ask an interesting question that people will be happy reviewing?
One of the best things you can do is prepare a simple project that actually solves many real-life problems, such as a guess-the-number game. This project requires variable assignment, conditionals, and loops, and can also use methods/functions (if applicable to the language), a GUI, and other more advanced concepts that you may wish to include. This will be on topic for a code review, you will learn a lot writing the project (if it is a first for the language), and the review will also teach you a lot about the language and best practices.
One common, but beginner-simple, program written here is FizzBuzz. I'm not really recommending you write more after last year's FizzBuzz invasion, but these questions garnered many good reviews that are helpful for learning languages, and other simple questions can do the same.